linux-kernel - Re: [PATCH 2/4] amdgpu_ucode: reduce number of pr

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Date:   Wed, 29 Sep 2021 21:37:16 -0600
From:   jim.cromie@...il.com
To:     Joe Perches <joe@...ches.com>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        amd-gfx mailing list <amd-gfx@...ts.freedesktop.org>,
        intel-gvt-dev@...ts.freedesktop.org,
        Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] amdgpu_ucode: reduce number of pr_debug calls

On Wed, Sep 29, 2021 at 8:08 PM Joe Perches <joe@...ches.com> wrote:
>
> On Wed, 2021-09-29 at 19:44 -0600, Jim Cromie wrote:
> > There are blocks of DRM_DEBUG calls, consolidate their args into
> > single calls.  With dynamic-debug in use, each callsite consumes 56
> > bytes of callsite data, and this patch removes about 65 calls, so
> > it saves ~3.5kb.
> >
> > no functional changes.
>
> No functional change, but an output logging content change.
>
> > RFC: this creates multi-line log messages, does that break any syslog
> > conventions ?
>
> It does change the output as each individual DRM_DEBUG is a call to
> __drm_dbg which is effectively:
>
>         printk(KERN_DEBUG "[" DRM_NAME ":%ps] %pV",
>                __builtin_return_address(0), &vaf);
>
>

ok.  that would disqualify the nouveau patch too.